Reading Different Types of Graphs

What is the primary purpose of using bar graphs?

• To represent parts of a whole

• To display correlations

• To compare different categories

• To show changes over time

How can you visually compare categories using a bar graph?

• By the area of the circles

• By the scatter of points

• By the slope of a line

• By the length of the bars

Which graph type is typically used to represent data changes over time?

• Line graph

• Bar graph

• Scatter plot

• Pie graph

What does a spiky line graph typically indicate?

• Stable data

• No changes

• Regular intervals

• Frequent changes

What does a line of best fit in a scatter plot indicate?

• The average value of the data

• The exact values of data points

• The maximum and minimum values

• The trend or correlation in the data

What type of correlation does a downward trending line of best fit indicate in a scatter plot?

• Cannot be determined

• No correlation

• Positive correlation

• Negative correlation

What is a negative correlation in a scatter plot likely to show?

• All variables are independent

• Increase in one variable leads to decrease in another

• Increase in one variable leads to increase in another

• No relationship between variables

In a pie graph, what does the entire circle typically represent?

• 100 percent of the data

• A specific quantity

• The smallest data category

• The largest data category

Which graph is best suited for comparing parts of a whole?

• Bar graph

• Line graph

• Scatter plot

• Pie graph

What percentage representation is common in pie graphs?

• Whole number percentages

• Decimal percentages

• Fractional parts

• Non-percentage numbers